通过对13 -5型马氏体不锈钢焊接接头进行等离子弧清根及碳弧气刨清根的比较，证明等离子弧清根对全焊透焊缝实施背面清根是可行的。
By comparing backgouging of plasma arc with carbon arc to the welded joint of 13-5 martensitic stainless steel, the backgouging of plasma arc is proved feasible for the full penetration weld.
半包、全包、清包任客户自选，工程垂直管理不发包；
Half packs, the whole package, packet-term customer demand, not vertical management contract;
半包、全包、清包任客户自选，工程垂直管理不发包；
Half packs, the whole package, packet-term customer demand, not vertical management contract;
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